Reps in reserve, measured off the bar.
Point your phone at the rack. RIRVana times every rep, reads the slowdown, and writes your next set from what actually happened, not from what you guessed on the way to the water fountain.

Measured
The camera times the concentric of every rep. Solid, full-contrast numbers are things it saw.
Estimated
Velocity loss maps to a reps-in-reserve range with a stated confidence. Purple numbers are things it inferred.
Decided
When the reading says there was room, the next set gets more. When it says you were over, the load holds. One line of why, every time.
Load follows the reading.
Nine weeks of back squat in the demonstration block. The jump is taken only when the measured effort said there was room; week four of each wave backs off on purpose.
Full block, every setLifters who already train close to failure.
The reading earns its keep in the last three reps. If your sets end at RPE 6, a logger is fine. If they end at a grind and you still write RPE 8 in the notes, this is the instrument you were missing.
Free while invite‑only. Paid later.
Lifters who train near failure go first. One email when your invite is ready.